﻿using System;
using System.Collections;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows;
using System.Runtime.InteropServices;
using System.Windows.Threading;
using Microsoft.Lync.Controls;
using Microsoft.TeamFoundation.WorkItemTracking.Client;
using Microsoft.VisualStudio.Shell.Interop;
using Microsoft.VisualStudio.Shell;
using System.Linq;
using System.Collections.Generic;

namespace WorkItemCollaborator
{
    /// <summary>
    /// This class implements the tool window exposed by this package and hosts a user control.
    ///
    /// In Visual Studio tool windows are composed of a frame (implemented by the shell) and a pane, 
    /// usually implemented by the package implementer.
    ///
    /// This class derives from the ToolWindowPane class provided from the MPF in order to use its 
    /// implementation of the IVsUIElementPane interface.
    /// </summary>
    [Guid("7fde2a7c-6bc7-455b-b779-52993122b618")]
    public class WICToolWindow : ToolWindowPane
    {
        
        private WicViewModel wicViewModel = new WicViewModel(); 

        public void CleanToolWindow()
        {
           wicViewModel.Clear();
        }

        public int? CurrentlyDisplayedWorkItemId 
        {
            get { return wicViewModel.WorkItem != null ? wicViewModel.WorkItem.WorkItemId : (int?)null; }
        }

        public void SetWorkItem(WorkItem workItem, Collection<User> projectUsers, string workItemEditorUrl)
        {
            if(workItem != null && this.Content != null)
            {
                Task t = new Task();
                SetWorkItemInternalDelegate del = new SetWorkItemInternalDelegate(wicViewModel.SetWorkItemInternal);
                Application.Current.Dispatcher.BeginInvoke(del, DispatcherPriority.Input, workItem, projectUsers, workItemEditorUrl);
            }
        }
        
        public void RefreshUsersOfCurrentlyDisplayedTaks(Collection<User> projectUsers)
        {
            wicViewModel.RefreshUsersOfCurrentlyDisplayedTaks(projectUsers);
        }

        /// <summary>
        /// Standard constructor for the tool window.
        /// </summary>
        public WICToolWindow() :
            base(null)
        {
            // Set the window title reading it from the resources.
            this.Caption = Resources.ToolWindowTitle;
            // Set the image that will appear on the tab of the window frame
            // when docked with an other window
            // The resource ID correspond to the one defined in the resx file
            // while the Index is the offset in the bitmap strip. Each image in
            // the strip being 16x16.
            this.BitmapResourceID = 301;
            this.BitmapIndex = 1;

            // This is the user control hosted by the tool window; Note that, even if this class implements IDisposable,
            // we are not calling Dispose on this object. This is because ToolWindowPane calls Dispose on 
            // the object returned by the Content property.
            base.Content = new WICControl(wicViewModel);
        }
    }
}
